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<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>hash: Chained hash tables</title> <meta name="generator" content="Libxml2 devhelp stylesheet"> <link rel="start" href="index.html" title="libxml2 Reference Manual"> <link rel="up" href="general.html" title="API"> <link rel="stylesheet" href="style.css" type="text/css"> <link rel="chapter" href="general.html" title="API"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table class="navigation" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2"><tr valign="middle"> <td><a accesskey="p" href="libxml2-globals.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td> <td><a accesskey="u" href="general.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td> <td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td> <td><a accesskey="n" href="libxml2-list.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td> <th width="100%" align="center">libxml2 Reference Manual</th> </tr></table> <h2><span class="refentrytitle">hash</span></h2> <p>hash - Chained hash tables</p> <p>This module implements the hash table support used in various places in the library. </p> <p>Author(s): Bjorn Reese <bjorn.reese@systematic.dk> </p> <div class="refsynopsisdiv"> <h2>Synopsis</h2> <pre class="synopsis">#define <a href="#XML_CAST_FPTR">XML_CAST_FPTR</a>(fptr); typedef struct _xmlHashTable <a href="#xmlHashTable">xmlHashTable</a>; typedef <a href="libxml2-hash.html#xmlHashTable">xmlHashTable</a> * <a href="#xmlHashTablePtr">xmlHashTablePtr</a>; int <a href="#xmlHashAddEntry">xmlHashAddEntry</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> void * userdata); int <a href="#xmlHashAddEntry2">xmlHashAddEntry2</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> void * userdata); int <a href="#xmlHashAddEntry3">xmlHashAddEntry3</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> void * userdata); typedef void * <a href="#xmlHashCopier">xmlHashCopier</a> (void * payload, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name); <a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> <a href="#xmlHashCopy">xmlHashCopy</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashCopier">xmlHashCopier</a> f); <a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> <a href="#xmlHashCreate">xmlHashCreate</a> (int size); <a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> <a href="#xmlHashCreateDict">xmlHashCreateDict</a> (int size, <br> <a href="libxml2-dict.html#xmlDictPtr">xmlDictPtr</a> dict); typedef void <a href="#xmlHashDeallocator">xmlHashDeallocator</a> (void * payload, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name); void <a href="#xmlHashDefaultDeallocator">xmlHashDefaultDeallocator</a> (void * entry, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name); void <a href="#xmlHashFree">xmlHashFree</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f); void * <a href="#xmlHashLookup">xmlHashLookup</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name); void * <a href="#xmlHashLookup2">xmlHashLookup2</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2); void * <a href="#xmlHashLookup3">xmlHashLookup3</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3); void * <a href="#xmlHashQLookup">xmlHashQLookup</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name); void * <a href="#xmlHashQLookup2">xmlHashQLookup2</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2); void * <a href="#xmlHashQLookup3">xmlHashQLookup3</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix3, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3); int <a href="#xmlHashRemoveEntry">xmlHashRemoveEntry</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f); int <a href="#xmlHashRemoveEntry2">xmlHashRemoveEntry2</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f); int <a href="#xmlHashRemoveEntry3">xmlHashRemoveEntry3</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f); void <a href="#xmlHashScan">xmlHashScan</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashScanner">xmlHashScanner</a> f, <br> void * data); void <a href="#xmlHashScan3">xmlHashScan3</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> <a href="libxml2-hash.html#xmlHashScanner">xmlHashScanner</a> f, <br> void * data); void <a href="#xmlHashScanFull">xmlHashScanFull</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashScannerFull">xmlHashScannerFull</a> f, <br> void * data); void <a href="#xmlHashScanFull3">xmlHashScanFull3</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> <a href="libxml2-hash.html#xmlHashScannerFull">xmlHashScannerFull</a> f, <br> void * data); typedef void <a href="#xmlHashScanner">xmlHashScanner</a> (void * payload, <br> void * data, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name); typedef void <a href="#xmlHashScannerFull">xmlHashScannerFull</a> (void * payload, <br> void * data, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3); int <a href="#xmlHashSize">xmlHashSize</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table); int <a href="#xmlHashUpdateEntry">xmlHashUpdateEntry</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> void * userdata, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f); int <a href="#xmlHashUpdateEntry2">xmlHashUpdateEntry2</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> void * userdata, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f); int <a href="#xmlHashUpdateEntry3">xmlHashUpdateEntry3</a> (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> void * userdata, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f); </pre> </div> <div class="refsect1" lang="en"><h2>Description</h2></div> <div class="refsect1" lang="en"> <h2>Details</h2> <div class="refsect2" lang="en"> <div class="refsect2" lang="en"> <h3> <a name="XML_CAST_FPTR">Macro </a>XML_CAST_FPTR</h3> <pre class="programlisting">#define <a href="#XML_CAST_FPTR">XML_CAST_FPTR</a>(fptr); </pre> <p>Macro to do a casting from an object pointer to a function pointer without encountering a warning from gcc #define XML_CAST_FPTR(fptr) (*(void **)(&fptr)) This macro violated ISO C aliasing rules (gcc4 on s390 broke) so it is disabled now</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody><tr> <td><span class="term"><i><tt>fptr</tt></i>:</span></td> <td>pointer to a function</td> </tr></tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashTable">Structure </a>xmlHashTable</h3> <pre class="programlisting">struct _xmlHashTable { The content of this structure is not made public by the API. } xmlHashTable; </pre> <p></p> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashTablePtr">Typedef </a>xmlHashTablePtr</h3> <pre class="programlisting"><a href="libxml2-hash.html#xmlHashTable">xmlHashTable</a> * xmlHashTablePtr; </pre> <p></p> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashCopier"></a>Function type xmlHashCopier</h3> <pre class="programlisting">void * xmlHashCopier (void * payload, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br> </pre> <p>Callback to copy data from a hash.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>payload</tt></i>:</span></td> <td>the data in the hash</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name associated</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>a copy of the data or NULL in case of error.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashDeallocator"></a>Function type xmlHashDeallocator</h3> <pre class="programlisting">void xmlHashDeallocator (void * payload, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br> </pre> <p>Callback to free data from a hash.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>payload</tt></i>:</span></td> <td>the data in the hash</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name associated</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashScanner"></a>Function type xmlHashScanner</h3> <pre class="programlisting">void xmlHashScanner (void * payload, <br> void * data, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br> </pre> <p>Callback when scanning data in a hash with the simple scanner.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>payload</tt></i>:</span></td> <td>the data in the hash</td> </tr> <tr> <td><span class="term"><i><tt>data</tt></i>:</span></td> <td>extra scanner data</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name associated</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashScannerFull"></a>Function type xmlHashScannerFull</h3> <pre class="programlisting">void xmlHashScannerFull (void * payload, <br> void * data, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3)<br> </pre> <p>Callback when scanning data in a hash with the full scanner.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>payload</tt></i>:</span></td> <td>the data in the hash</td> </tr> <tr> <td><span class="term"><i><tt>data</tt></i>:</span></td> <td>extra scanner data</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name associated</td> </tr> <tr> <td><span class="term"><i><tt>name2</tt></i>:</span></td> <td>the second name associated</td> </tr> <tr> <td><span class="term"><i><tt>name3</tt></i>:</span></td> <td>the third name associated</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashAddEntry"></a>xmlHashAddEntry ()</h3> <pre class="programlisting">int xmlHashAddEntry (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> void * userdata)<br> </pre> <p>Add the @userdata to the hash @table. This can later be retrieved by using the @name. Duplicate names generate errors.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>userdata</tt></i>:</span></td> <td>a pointer to the userdata</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>0 the addition succeeded and -1 in case of error.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashAddEntry2"></a>xmlHashAddEntry2 ()</h3> <pre class="programlisting">int xmlHashAddEntry2 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> void * userdata)<br> </pre> <p>Add the @userdata to the hash @table. This can later be retrieved by using the (@name, @name2) tuple. Duplicate tuples generate errors.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name2</tt></i>:</span></td> <td>a second name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>userdata</tt></i>:</span></td> <td>a pointer to the userdata</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>0 the addition succeeded and -1 in case of error.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashAddEntry3"></a>xmlHashAddEntry3 ()</h3> <pre class="programlisting">int xmlHashAddEntry3 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> void * userdata)<br> </pre> <p>Add the @userdata to the hash @table. This can later be retrieved by using the tuple (@name, @name2, @name3). Duplicate entries generate errors.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name2</tt></i>:</span></td> <td>a second name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name3</tt></i>:</span></td> <td>a third name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>userdata</tt></i>:</span></td> <td>a pointer to the userdata</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>0 the addition succeeded and -1 in case of error.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashCopy"></a>xmlHashCopy ()</h3> <pre class="programlisting"><a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> xmlHashCopy (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashCopier">xmlHashCopier</a> f)<br> </pre> <p>Scan the hash @table and applied @f to each value.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>f</tt></i>:</span></td> <td>the copier function for items in the hash</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the new table or NULL in case of error.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashCreate"></a>xmlHashCreate ()</h3> <pre class="programlisting"><a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> xmlHashCreate (int size)<br> </pre> <p>Create a new xmlHashTablePtr.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>size</tt></i>:</span></td> <td>the size of the hash table</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the newly created object, or NULL if an error occurred.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashCreateDict"></a>xmlHashCreateDict ()</h3> <pre class="programlisting"><a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> xmlHashCreateDict (int size, <br> <a href="libxml2-dict.html#xmlDictPtr">xmlDictPtr</a> dict)<br> </pre> <p>Create a new <a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> which will use @dict as the internal dictionary</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>size</tt></i>:</span></td> <td>the size of the hash table</td> </tr> <tr> <td><span class="term"><i><tt>dict</tt></i>:</span></td> <td>a dictionary to use for the hash</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the newly created object, or NULL if an error occurred.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashDefaultDeallocator"></a>xmlHashDefaultDeallocator ()</h3> <pre class="programlisting">void xmlHashDefaultDeallocator (void * entry, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br> </pre> <p>Free a hash table entry with xmlFree.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>entry</tt></i>:</span></td> <td>the hash table entry</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the entry's name</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashFree"></a>xmlHashFree ()</h3> <pre class="programlisting">void xmlHashFree (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br> </pre> <p>Free the hash @table and its contents. The userdata is deallocated with @f if provided.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>f</tt></i>:</span></td> <td>the deallocator function for items in the hash</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashLookup"></a>xmlHashLookup ()</h3> <pre class="programlisting">void * xmlHashLookup (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br> </pre> <p>Find the userdata specified by the @name.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the pointer to the userdata</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashLookup2"></a>xmlHashLookup2 ()</h3> <pre class="programlisting">void * xmlHashLookup2 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2)<br> </pre> <p>Find the userdata specified by the (@name, @name2) tuple.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name2</tt></i>:</span></td> <td>a second name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the pointer to the userdata</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashLookup3"></a>xmlHashLookup3 ()</h3> <pre class="programlisting">void * xmlHashLookup3 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3)<br> </pre> <p>Find the userdata specified by the (@name, @name2, @name3) tuple.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name2</tt></i>:</span></td> <td>a second name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name3</tt></i>:</span></td> <td>a third name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the a pointer to the userdata</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashQLookup"></a>xmlHashQLookup ()</h3> <pre class="programlisting">void * xmlHashQLookup (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name)<br> </pre> <p>Find the userdata specified by the QName @prefix:@name/@name.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>prefix</tt></i>:</span></td> <td>the prefix of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the pointer to the userdata</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashQLookup2"></a>xmlHashQLookup2 ()</h3> <pre class="programlisting">void * xmlHashQLookup2 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2)<br> </pre> <p>Find the userdata specified by the QNames tuple</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>prefix</tt></i>:</span></td> <td>the prefix of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>prefix2</tt></i>:</span></td> <td>the second prefix of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name2</tt></i>:</span></td> <td>a second name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the pointer to the userdata</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashQLookup3"></a>xmlHashQLookup3 ()</h3> <pre class="programlisting">void * xmlHashQLookup3 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * prefix3, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3)<br> </pre> <p>Find the userdata specified by the (@name, @name2, @name3) tuple.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>prefix</tt></i>:</span></td> <td>the prefix of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>prefix2</tt></i>:</span></td> <td>the second prefix of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name2</tt></i>:</span></td> <td>a second name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>prefix3</tt></i>:</span></td> <td>the third prefix of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name3</tt></i>:</span></td> <td>a third name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the a pointer to the userdata</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashRemoveEntry"></a>xmlHashRemoveEntry ()</h3> <pre class="programlisting">int xmlHashRemoveEntry (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br> </pre> <p>Find the userdata specified by the @name and remove it from the hash @table. Existing userdata for this tuple will be removed and freed with @f.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>f</tt></i>:</span></td> <td>the deallocator function for removed item (if any)</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>0 if the removal succeeded and -1 in case of error or not found.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashRemoveEntry2"></a>xmlHashRemoveEntry2 ()</h3> <pre class="programlisting">int xmlHashRemoveEntry2 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br> </pre> <p>Find the userdata specified by the (@name, @name2) tuple and remove it from the hash @table. Existing userdata for this tuple will be removed and freed with @f.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name2</tt></i>:</span></td> <td>a second name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>f</tt></i>:</span></td> <td>the deallocator function for removed item (if any)</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>0 if the removal succeeded and -1 in case of error or not found.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashRemoveEntry3"></a>xmlHashRemoveEntry3 ()</h3> <pre class="programlisting">int xmlHashRemoveEntry3 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br> </pre> <p>Find the userdata specified by the (@name, @name2, @name3) tuple and remove it from the hash @table. Existing userdata for this tuple will be removed and freed with @f.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name2</tt></i>:</span></td> <td>a second name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name3</tt></i>:</span></td> <td>a third name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>f</tt></i>:</span></td> <td>the deallocator function for removed item (if any)</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>0 if the removal succeeded and -1 in case of error or not found.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashScan"></a>xmlHashScan ()</h3> <pre class="programlisting">void xmlHashScan (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashScanner">xmlHashScanner</a> f, <br> void * data)<br> </pre> <p>Scan the hash @table and applied @f to each value.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>f</tt></i>:</span></td> <td>the scanner function for items in the hash</td> </tr> <tr> <td><span class="term"><i><tt>data</tt></i>:</span></td> <td>extra data passed to f</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashScan3"></a>xmlHashScan3 ()</h3> <pre class="programlisting">void xmlHashScan3 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> <a href="libxml2-hash.html#xmlHashScanner">xmlHashScanner</a> f, <br> void * data)<br> </pre> <p>Scan the hash @table and applied @f to each value matching (@name, @name2, @name3) tuple. If one of the names is null, the comparison is considered to match.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata or NULL</td> </tr> <tr> <td><span class="term"><i><tt>name2</tt></i>:</span></td> <td>a second name of the userdata or NULL</td> </tr> <tr> <td><span class="term"><i><tt>name3</tt></i>:</span></td> <td>a third name of the userdata or NULL</td> </tr> <tr> <td><span class="term"><i><tt>f</tt></i>:</span></td> <td>the scanner function for items in the hash</td> </tr> <tr> <td><span class="term"><i><tt>data</tt></i>:</span></td> <td>extra data passed to f</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashScanFull"></a>xmlHashScanFull ()</h3> <pre class="programlisting">void xmlHashScanFull (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> <a href="libxml2-hash.html#xmlHashScannerFull">xmlHashScannerFull</a> f, <br> void * data)<br> </pre> <p>Scan the hash @table and applied @f to each value.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>f</tt></i>:</span></td> <td>the scanner function for items in the hash</td> </tr> <tr> <td><span class="term"><i><tt>data</tt></i>:</span></td> <td>extra data passed to f</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashScanFull3"></a>xmlHashScanFull3 ()</h3> <pre class="programlisting">void xmlHashScanFull3 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> <a href="libxml2-hash.html#xmlHashScannerFull">xmlHashScannerFull</a> f, <br> void * data)<br> </pre> <p>Scan the hash @table and applied @f to each value matching (@name, @name2, @name3) tuple. If one of the names is null, the comparison is considered to match.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata or NULL</td> </tr> <tr> <td><span class="term"><i><tt>name2</tt></i>:</span></td> <td>a second name of the userdata or NULL</td> </tr> <tr> <td><span class="term"><i><tt>name3</tt></i>:</span></td> <td>a third name of the userdata or NULL</td> </tr> <tr> <td><span class="term"><i><tt>f</tt></i>:</span></td> <td>the scanner function for items in the hash</td> </tr> <tr> <td><span class="term"><i><tt>data</tt></i>:</span></td> <td>extra data passed to f</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashSize"></a>xmlHashSize ()</h3> <pre class="programlisting">int xmlHashSize (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table)<br> </pre> <p>Query the number of elements installed in the hash @table.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>the number of elements in the hash table or -1 in case of error</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashUpdateEntry"></a>xmlHashUpdateEntry ()</h3> <pre class="programlisting">int xmlHashUpdateEntry (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> void * userdata, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br> </pre> <p>Add the @userdata to the hash @table. This can later be retrieved by using the @name. Existing entry for this @name will be removed and freed with @f if found.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>userdata</tt></i>:</span></td> <td>a pointer to the userdata</td> </tr> <tr> <td><span class="term"><i><tt>f</tt></i>:</span></td> <td>the deallocator function for replaced item (if any)</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>0 the addition succeeded and -1 in case of error.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashUpdateEntry2"></a>xmlHashUpdateEntry2 ()</h3> <pre class="programlisting">int xmlHashUpdateEntry2 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> void * userdata, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br> </pre> <p>Add the @userdata to the hash @table. This can later be retrieved by using the (@name, @name2) tuple. Existing entry for this tuple will be removed and freed with @f if found.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name2</tt></i>:</span></td> <td>a second name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>userdata</tt></i>:</span></td> <td>a pointer to the userdata</td> </tr> <tr> <td><span class="term"><i><tt>f</tt></i>:</span></td> <td>the deallocator function for replaced item (if any)</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>0 the addition succeeded and -1 in case of error.</td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <h3> <a name="xmlHashUpdateEntry3"></a>xmlHashUpdateEntry3 ()</h3> <pre class="programlisting">int xmlHashUpdateEntry3 (<a href="libxml2-hash.html#xmlHashTablePtr">xmlHashTablePtr</a> table, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name2, <br> const <a href="libxml2-xmlstring.html#xmlChar">xmlChar</a> * name3, <br> void * userdata, <br> <a href="libxml2-hash.html#xmlHashDeallocator">xmlHashDeallocator</a> f)<br> </pre> <p>Add the @userdata to the hash @table. This can later be retrieved by using the tuple (@name, @name2, @name3). Existing entry for this tuple will be removed and freed with @f if found.</p> <div class="variablelist"><table border="0"> <col align="left"> <tbody> <tr> <td><span class="term"><i><tt>table</tt></i>:</span></td> <td>the hash table</td> </tr> <tr> <td><span class="term"><i><tt>name</tt></i>:</span></td> <td>the name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name2</tt></i>:</span></td> <td>a second name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>name3</tt></i>:</span></td> <td>a third name of the userdata</td> </tr> <tr> <td><span class="term"><i><tt>userdata</tt></i>:</span></td> <td>a pointer to the userdata</td> </tr> <tr> <td><span class="term"><i><tt>f</tt></i>:</span></td> <td>the deallocator function for replaced item (if any)</td> </tr> <tr> <td><span class="term"><i><tt>Returns</tt></i>:</span></td> <td>0 the addition succeeded and -1 in case of error.</td> </tr> </tbody> </table></div> </div> <hr> </div> </div> </body> </html>
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